As you can see, we've got a nice, neat entry where the bullet has entered the body. where the bullet has exited, you've got this massive wound, open wound, where eh, all the gubbins has come out. Gubbins is a slang term in england for 'internal machinery' like the parts inside the engine that are not seen. He also incorrectly used 'has'...come out. It should be 'have' come out. This is a common way of speaking, but does not sound well educated.

The first word is probably "gubbins", meaning stuff. The man is saying that all the stuff from inside has come out. The second one sounds like "neanderthal", but I'm not sure why he would use that. :)